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    • 7. 发明授权
    • Measurement method
    • 测量方法
    • US06356739B1
    • 2002-03-12
    • US09337290
    • 1999-06-21
    • Jukka Ranta
    • Jukka Ranta
    • H04B1700
    • H04B17/318
    • The invention relates to internal measurement methods of mobile communication systems, more particularly how to arrange time intended for signal measurement for the mobile stations. In the method according to the invention the RSSI and OTD measurements are made from the same data collected during a certain period of time, whereby the same measurement data in a way is used two times in order to generate two different sets of measurement results. This saves the free time available during one frame, because it is not necessary to arrange separate measurement periods for the RSSI and the OTD measurements.
    • 本发明涉及移动通信系统的内部测量方法,更具体地说,涉及如何安排用于移动台的信号测量的时间。 在根据本发明的方法中,RSSI和OTD测量是从在一段时间内收集的相同数据进行的,由此以同样的方式使用相同的测量数据两次,以产生两组不同的测量结果。 这样可以节省一帧内的可用空闲时间,因为不需要为RSSI和OTD测量设置单独的测量周期。
    • 8. 发明授权
    • Method and apparatus for compensation for a DC voltage offset of a
digital to analog converter
    • 用于补偿数模转换器的直流电压偏移的方法和装置
    • US5731772A
    • 1998-03-24
    • US790399
    • 1997-01-29
    • Pekka MikkolaMarkku LintinenJukka Ranta
    • Pekka MikkolaMarkku LintinenJukka Ranta
    • H03M1/06H03C3/40H03M1/10H03M1/66
    • H03M1/1019H03C3/40H03M1/0682H03M1/66
    • Disclosed is a method and a device for compensating the DC offset (dU) of a D/A converter (2), particularly in the base frequency modulator of a mobile phone. The method and the device use an error correction register (5), whose value is changed on the basis of the DC offset, and which is added to each signal sample to be converted for compensating the DC offset. The value of the error correction register (5) is changed in a testing mode so that a preset control value is fed into the D/A converter (2), corresponding to the zero voltage of the output of an ideal D/A converter; the voltage values of outputs of a differential output pair (2a, 2b) arranged in connection with the D/A converter (2) are compared to verify the polarity of the voltage difference (dU) of the outputs and the polarity, i.e. the sign, of a relative DC offset; and, on the basis of the polarity of the voltage difference (dU), the value of the error correction register (5) is either decreased or increased by one from the preset initial value which is preferably zero.
    • 公开了一种用于补偿D / A转换器(2)的DC偏移(dU)的方法和装置,特别是在移动电话的基频调制器中。 该方法和装置使用纠错寄存器(5),其值根据DC偏移改变,并且被添加到要转换的每个信号样本以补偿DC偏移。 误差校正寄存器(5)的值在测试模式下改变,使得预设的控制值被馈送到D / A转换器(2)中,对应于理想D / A转换器的输出的零电压; 将与D / A转换器(2)连接配置的差分输出对(2a,2b)的输出的电压值进行比较,以验证输出的电压差(dU)和极性的极性,即符号 ,相对DC偏移; 并且基于电压差(dU)的极性,误差校正寄存器(5)的值从预设的初始值(其优选为零)减小或增加1。
    • 9. 发明授权
    • Branch control system for rom-programmed processor
    • 用于ROM编程处理器的分支控制系统
    • US5581776A
    • 1996-12-03
    • US382994
    • 1995-02-03
    • Jari HagqvistJukka Ranta
    • Jari HagqvistJukka Ranta
    • G06F9/06G06F9/26G06F9/00
    • G06F9/328G06F9/268
    • A computer controlled apparatus includes a program counter for manifesting program count values and a processor for executing a prestored program in accordance with the program count values. The apparatus includes a read only memory with a prestored program that is accessible in response to generation of a span of program count values. Auxiliary memory includes a prestored program segment. A control circuit is coupled to the program counter and stores a predetermined program count value within the span of program count values in ROM. The control circuit is responsive to a match of a program count value from the program counter and the determined program count value to cause the program counter to be loaded with a branch program count value. That value enables the processor to immediately access and execute the prestored program segment from the auxiliary memory in lieu of a subspan of program count addresses in the ROM. The processor responds to the branch program count value as though it is a next program count value from a previous program count value, thereby seamlessly executing the second prestored program.
    • 计算机控制装置包括用于显示程序计数值的程序计数器和用于根据程序计数值执行预存储程序的处理器。 该装置包括只读存储器,其具有可响应于程序计数值的跨度的生成而可访问的预存储程序。 辅助存储器包括预先存储的程序段。 控制电路耦合到程序计数器,并将预定的程序计数值存储在ROM中的程序计数值范围内。 控制电路响应来自程序计数器的程序计数值和确定的程序计数值的匹配,以使程序计数器加载分支程序计数值。 该值使得处理器能够立即从辅助存储器访问并执行预存的程序段,代替ROM中的程序计数地址的子跨段。 处理器响应于分支程序计数值,就像它是来自先前程序计数值的下一程序计数值一样,从而无缝地执行第二预存储程序。